| Autor: |
Gaole Yang, Zhendong An, Wei Jiang, Xiankai Li, Weiwei Qiu, Zhengfa Liao, Ziyue Zhuang, Xiaoping Zhang, Shengli Chen, Chenchen Guo, Erxi Xiao, Xiao Fang, Xinxiang Li, Hongwei Wang, Xinrong Hu, Bing Jiang, Wenqing Shen, Jincheng Wang, Jie Ren, Xichao Ruan, Dexin Wang, Su-Yalatu Zhang, Wen Luo, Zhichao Zhu, Haoyang Lan, Zongwei Cao, Xu Ma, Yingdu Liu, Pusen Wang, Yi Yang, Ping Su, Xiangai Deng, Wanbing He, Yugang Ma, Chunwang Ma, Yuting Wang, Zhitao Dai, Ertao Li, Pengqin He, RenGuang Tang, Tao Zhou, Jing Wang, Han Yi, Yue Zhang, Yonghao Chen, Ruirui Fan, Keqing Gao, Qiang Li, Kang Sun, Zhixin Tan, Minhao Gu, Hantao Jing, Jingyu Tang |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Physical Review Research, Vol 6, Iss 1, p 013225 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2643-1564 |
| DOI: |
10.1103/PhysRevResearch.6.013225 |
| Popis: |
The neutron capture measurement of natural rhenium was performed with the time-of-flight technique at the Back-n facility of the China Spallation Neutron Source in the energy range from 1 to 500 eV of the resolved resonance region (RRR) and from 5 to 400 keV in the unresolved resonance region (URR). Prompt γ-rays originating from neutron-induced capture events were detected by four C_{6}D_{6} detectors. The pulse height weighting technique and the double-bunch unfolding method based on the Bayesian theory were used in the data analysis. To obtain reliable measurement results, background subtraction, normalization, and corrections were carefully considered. The multilevel R-matrix Bayesian code SAMMY was used to extract the resonance parameters in the RRR. An absence of resonance near 392 eV is observed in our measurement, which has been observed in previous works. The average cross sections in the URR of natural rhenium relative to ^{197}Au were obtained in logarithmical equidistant energy bins with 20 bins per energy decade. The talys code was used to describe the average cross sections in the URR; the Maxwellian-averaged cross sections (MACSs) of ^{185}Re and ^{187}Re are given from kT=5 to 100 keV. At a thermal energy of kT=30 keV, the MACS value for ^{185}Re (1469±127 mb) is in good agreement with the Karlsruhe Astrophysical Database of Nucleosynthesis in Stars (KADoNIS) recommended value (1535±62 mb) within the error bars. By contrast, the value of 1361±118 mb for ^{187}Re shows a discrepancy with the KADoNiS recommended value (1160±57 mb). |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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